#!/bin/bash

# Slackware build script for <appname>

# Copyright <year> <you> <where you live>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# |-----------------------------------------------------------------| #
# REMOVE THIS ENTIRE BLOCK OF TEXT #
#
# A license is required, and we strongly suggest you use the above
# BSD/MIT style license. We DO NOT accept "Public Domain" scripts.
# Public domain is not valid in some countries, and no license is
# worse than a "bad" license in those countries.
#
# This template is not meant to be a 'cut and paste' script to
# enable any random user to make a working package.  While
# we're certainly not discouraging use of this template, if
# you haven't manually gone through each step of the process
# without the build script (typically as a normal user, as this
# will reveal problems that you won't see as root), then there's
# a good chance that something important is missing from your
# submission.

# When using this template script, please remove as many of
# these unnecessary comments as possible.  Commented code is
# a good thing, but if it's obvious, there's no need to comment it.
#
# AGAIN, REMOVE THE COMMENTS IF THEY ARE NOT NEEDED - DON'T JUST
# DELETE THIS BLOCK OF TEXT WITHOUT BOTHERING TO READ WHAT'S IN IT.
#
# |-----------------------------------------------------------------| #

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=appname			# replace with name of program
VERSION=${VERSION:-1.4.1}	# replace with version of program
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}		# the "_SBo" is required
PKGTYPE=${PKGTYPE:-tgz}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}	# For consistency's sake, use this
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}	# Drop the package in /tmp

if [ "$ARCH" = "i586" -o "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=$ARCH -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" -o "$ARCH" = "aarch64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e # Exit on most errors
# If you prefer to do selective error checking with
#   command || exit 1
# then that's also acceptable... though these days, we'd really prefer
# you to use "set -e".

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz --no-same-owner
cd $PRGNAM-$VERSION
find . ! -type l    -a \( \
  \(     -perm /111 -a ! -perm 755 -a -exec chmod -f 755 {} + \) -o \
  \(   ! -perm /111 -a ! -perm 644 -a -exec chmod -f 644 {} + \) \)

# Your application will probably need different configure flags;
# these are provided as an example only.
# Be sure to build only shared libraries unless there's some need for
# static. Some configure scripts accept and ignore --disable-static, so
# you might have to do something like "rm -f $PKG/usr/lib*/*.a" to avoid
# including static libraries.
# Also, some configure scripts accept and ignore --docdir and/or --mandir.
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --disable-static \
  --build=$ARCH-slackware-linux

# Compile the application and install it into the $PKG directory.
# Not all projects support "install-strip"; see below for an alternative.
# The V=1 makes (most) autotools projects display the actual compile
# commands, which is very useful for debugging.
# If the compile fails and you're using MAKEFLAGS=-j<n>, try adding
# -j1 to the make command:
#make -j1 V=1
# If this fixes the problem, it's OK to leave it in, but don't add -j1 unless
# it's really needed (it slows things down, sometimes a lot).
make V=1
make install-strip DESTDIR=$PKG

# Strip binaries and libraries - this can be done with 'make install-strip'
# in many source trees, and that's usually acceptable if so, but if not,
# do a "make install" and use this:
#find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
#  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Don't ship .la files in /lib /lib64 /usr/lib /usr/lib64. If
# your package includes shared libraries in private directories
# (e.g. /usr/lib/$PRGNAM/plugins/*.so), and if there are also .la
# files in that directory, it's best NOT to remove them from the
# package (sometimes they're required, and if not, they're small and
# won't do any harm).
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la

# Compress man pages.
# If the man pages are installed to /usr/share/man instead, you'll
# need to either add the --mandir=/usr/man flag to configure or move
# them manually after the make install process is run.
find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

# If there are no symlinks in /usr/man, you can probably replace the
# above with this more concise code:
#gzip -9 $PKG/usr/man/man*/*

# Compress info pages and remove the package's dir file.
# If no info pages are installed by the software, don't leave this
# in the script If your package does include info pages, you also
# need a doinst.sh and douninst.sh to manage the info directory
# (/usr/info/dir).
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*.info*

# Remove perllocal.pod and other special files that don't need to be
# installed, as they will overwrite what's already on the system. If
# this is not needed, remove it from the script. It will only be
# needed if the software actually includes Perl modules (pretty rare,
# for an autotools project).
find $PKG -name perllocal.pod \
  -o -name ".packlist" \
  -o -name "*.bs" \
  | xargs rm -f

# Copy program documentation into the package.
# The included documentation varies from one application to another,
# so be sure to adjust your script as needed.
# Also, include the SlackBuild script in the documentation directory.
PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a \
  <documentation> \
  $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

# Copy the slack-desc (and a custom doinst.sh and/or douninst.sh if
# necessary) into "./install".
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh
cat $CWD/douninst.sh > $PKG/install/douninst.sh

# Make the package; be sure to leave it in $OUTPUT.
# If package symlinks need to be created during install *before*
# your custom contents of doinst.sh runs, then add the -p switch to
# the makepkg command below -- see makepkg(8) for details.
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE